Chalcogen, Lanthanoid, Rare earth, Khirouni

• Ca-K-La-Mn-O
• Cr-La-Mn-Nd-O-Sr
• Ca-Cr-Mn-O-Pr
• Ca-La-Mn-O
• Ca-Mn-O-Pr
• electronic and electrical properties
• structural properties
• conductivity or resistivity
• activation energy
• values of activation energy
• transitional
• rare earth
• lanthanoid
• chalcogen
• oxide
• orthorhombic
• trigonal
• cubic
• tetragonal